Retaining means.



AJHELLA. RETAINING MEANS. APPLIC ATION FILED MMLZI, 1913.

1,140,036. Patented May18 1915.

ANTONIHELLA, or CHICAGO, ILLINOIS.

RETAINING MEANS.

gspecification of Letters Patent. Patented Dray 18, 1915.

Application filed March 21, 1913. Serial No. 755,862.

To 0. 1 who malt may concern: 3e 1t known that I, ANTON HELLA, a citizen of the United States, and a resident ofthe city of Chicago, in the county of Cook 'and State of Illinois, have invented certain 1 new and useful Improvements 1n Retaining 7 Means; and I do hereby declare that the following is a full, clear and exact description of the same, reference being had to the accompanying drawings, and to the nu-...- 'merals of reference marked thereon,-wh1ch form a part of this specification.

.Heretofore when it has been desired to retain. loosely engaged members on a bolt or shaft in order to provide a means whereby said members might be easily removed, retaining means such as threaded nuts, cotter pins or split pins, and the like have been used suitably associated with washers for the purpose. Where retaining means are used requiring the removal or detachment thereof from the shaft before .the member engaged on the shaft may be removed, such an operation necessitates a great loss of time and inconvenience, and furthermore the retaining means may be lost when so removed, which may at times prove of serious consequencea.

This.invention relates to a device wherein the retaining means is constantly associated with its bolt or shaft and cannot be removed therefrom, but will permit rapid engagement on the shaft or disengagement therefrom' of members, the retaining means falling instantly into locking position after such Operation in each case. It is an object of this invention to provid a bolt or shaft with a retaining member constantly associated therewith and adapted to automatically fall into locking position after an element has been slipped on or off said shaft or bolt.

It is also an object of this invention to provide a retaining member, which, when moved into concentric relation with the shaft on which it is attached, will permit the shaft supported elements to be moved smaller diameter than the shaft to permit the insertion of elements thereover onto the shaft when so desired, and acting to retain the same thereon. i

It is finally an object of this invention to construct a simple device of durable constructiorr and readily adaptable to practically any type of shaft, bolt or the like.

The invention (in a preferred form) is illustrated in the drawings, and hereinafter more fully described.

In the drawings: Figure 1 is a front elevation of a stud shaft having elements pivotally retained thereon by a device embodying my invention. Fig. 2 is an end elevation thereof. Fig. 3 is a view partly in section, showing the operation of the device as an element is slipped' on or oif the shaft. Fig. 4 is a viewof a stud shaft partly in section, andshowing a locking devica there on in looking position. Fig. 5 is a section on line 55 of Fig. 4:.

As shown in the drawings: 1,-indicates a ,.stud shaft or; bolt which, near one end is turned to a smaller diameter affording a neck portion 2, surrounded by the periph eral groove 3, one side of which, in this case,

is formed by the integral cap or extended portion 4, of the same diameter as the stud shaft. Engaged in said groove 3, is'a ring 5,. the outside diameter of which is the same or less than that of the stud shaft, and the inside diameter of which is greater than that of the neck portion 2, of the stud shaft. The ring 5,. may be constructed and attached to the stud shaft in any suitable manner, .such as forinstance' a split ring or collar properly sprung into said groove.

For convenience of illustration, the elements engaged on the stud shaft have been shown in Figs. 1, 2, and 3, as levers, the inner one 6, of which bears against the integral flanged head 8, of the stud shaft, and the other 7 of which is retained in position by the looking or retaining ring 5.

The operation is as follows: When it is desired to move one of the elements on or off of the stud shaft or bolt 1, the ring 5,

is moved into concentric. relation with said shaft, and as shown more particularly in Fi 3, the element in this case designated as is thereby'readily slipped over the ring,

and removed or engaged on the shaft, as the the ring drops into the eccentric position, which will prevent engagement or disengagement of an element on said shaft.

For convenience of illustration I have shown the adaptation of the device in the simplest manner possible.

I am aware that details of construction. may be varied through a wide range Without departing from the principles of this inven-' tion, and I therefore do not purpose limiting the patent granted otherwise than necessitated by'the appended claim. t

I claim as my invention: In a device of he class described a shaft having a peripheral groove therein, and a rotatable ring permanentlyiandloosely engaged around the'shaft in said groove and said. shaft permitting nsertionlof elements the'reover upon said shaft, when the ring is in a concentric position thereon.

In testimony whereof I have hereunto sub- 1 scribed my name in the presence of two subscribing witnesses. v

ANTON HELLA.

Witnesses I CHARLES W. HILLS, Jr., LEoN Rms'mm. 

